SV Ramesh Goud

Abstract

Aim: Nanomaterials are widely used in modern clinical dentistry. They improve various properties, such as antimicrobial properties, durability of materials. These particles do not exceed 100 nm, due to they obtain a better ratio between the surface and mass. Nanomaterials are used in many areas of dentistry, such as conservative dentistry, endodontics, oral, and maxillofacial surgery, periodontics, orthodontics, and prosthetics. One of the most important complications of fixed orthodontic treatment is enamel demineralization. Brackets and orthodontic accessories facilitate plaque accumulation and compromise oral hygiene maintenance which lead to an increase in oral bacteria count during orthodontic treatment. Materials and Methods: 30 MBT 0.022’’ monocrystalline ceramic brackets and 30 MBT 0.022’’ polycrystalline ceramic brackets (Metro Orthodontics) which are randomly divided into 4 groups: 2 control groups (group-1=15 uncoated monocrystalline and group-2=15 uncoated polycrystalline) and 2 experimental groups (group-3=15 silver oxide coated monocrystalline and group-4=15 silver oxide coated polycrystalline). Result: S.mutans counts were significantly less in the experimental groups than control groups. Conclusion: Titanium oxide coatings on ceramic brackets reduced the colony forming units of S. mutans. Reduced number of colony forming units was seen in both the monocrystalline and polycrystalline coated brackets than their control groups.   Keywords: Titanium oxide, Nanoparticles, Smutans, Ceramic brackets

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Abstract

Aim: The historical aspect of nanotechnology dates back to 600 BC. Taniguchi was the first to use the term nanotechnology in 1974, originating from a Greek word meaning “dwarf”. Nanotechnology when combined with dentistry and medicine created an interdisciplinary field i.e., nanodentistry and nanomedicine and this combination gets engineers, chemists, physicians on a single platform having various applications in detection, imaging and drug delivery devices.With respect to orthodontics, the nanoparticle coated archwires, adhesives, temporary anchorage devices, brackets, orthodontic wires with shape memory and biofilm control features have been applied. Silver nanoparticles are combined with different accessory orthodontic materials which results in the addition of more antimicrobial properties which inturn decreases the biofilm formation and maintain better oral health. Antibacterial effectiveness of nanosilver coated materials has been shown with and without the release of nanosilver ions in in vitro studies. In addition, long-term inhibitory effects against S.mutans have been found while no nanosilver ions were released. Materials and Methods: 30 MBT 0.022’’ monocrystalline ceramic brackets and 30 MBT 0.022’’ polycrystalline ceramic brackets (Metro Orthodontics) which are randomly divided into 4 groups: 2 control groups (group-1=15 uncoated monocrystalline and group-2=15 uncoated polycrystalline) and 2 experimental groups (group-3=15 silver oxide coated monocrystalline and group-4=15 silver oxide coated polycrystalline). Result: S.mutans counts were significantly less in the experimental groups than control groups. Conclusion: Silver oxide coatings on ceramic brackets reduced the colony forming units of S. mutans. Both monocrystalline and polycrystalline coated brackets showed reduced number of colony forming units than their control groups.   Keywords: Nanoparticles, Silver oxide, Smutans, Ceramic brackets

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